[HOT] building=hut

Claire Halleux claire.halleux at hotosm.org
Thu Sep 11 17:04:49 UTC 2014

Hi Heather
Definitely! That's the kind of material currently pushed by Blake Girardot
and the Training WG, even if it's not done in a Gdoc but likely through the
wiki, we are still gathering pictures and investigating licensing issues.
Anyone who wants to help on this is welcome to join our discussion or

Huts had been a bit part of a recurring discussion, which explains the
specific posting.


Claire Halleux
Volunteer and Member of the Board
+243 99 256 9980 (Kinshasa, DRC)
Humanitarian OpenStreetMap Team


On Thu, Sep 11, 2014 at 3:59 PM, Heather Leson <heatherleson at gmail.com>

> Nick and others,
> Last week Andrew was helping someone identify and tag mines. Today, Nick
> is explaining huts.
> Do you think that it would help to have a basic compilation of tags,
> satellite screenshots and pictures to help guide new mappers for this
> region? We could simply start a google doc for pictures, tags and just keep
> adding it.
> It might help with accuracy.
> Let me know and I can help.
> heather
> Heather Leson
> heatherleson at gmail.com
> Twitter: HeatherLeson
> Blog: textontechs.com
> On Thu, Sep 11, 2014 at 9:44 AM, Nick Allen <nick.allen.54 at gmail.com>
> wrote:
>>  Hi,
>> A recent post on this list led me to investigate the tag building=hut.
>> I'm not entirely sure that I remember it's history within HOT, but I
>> believe many of us started using it on round thatched dwellings at the
>> start of the Ebola outbreak. I've been creating a circle of the correct
>> size and tagging the way as 'building=hut' in much the same way as we
>> create a rectangle / polygon on a square sided structure and tag it
>> building=yes. The info on the main tagging wiki at
>> http://wiki.openstreetmap.org/wiki/Key:building shows the tag being used
>> on an area, not a node.
>> I've had a quick look on overpassturbo for part of Liberia, and there are
>> clusters of the tag, in some places on a node & in others on a polygon - on
>> at least one occasion the node has a comment similar to '7 huts'.
>> A quick query on taginfo for building=hut;
>> All    832415,
>> Node   8113
>> Way 824247
>> Relation   55
>> The purpose of creating the polygon was for the clever GIS folk to
>> analyse and create population estimates, when used in conjunction with the
>> landuse=residential polygon which needs to be traced fairly closely around
>> the perimeter of the cluster of buildings to allow accurate estimates of
>> population for a village / hamlet / town (Something to do with area
>> calculations). I suspect that it is still being used for that purpose, and
>> will continue to do so. Also if the building is traced it appears on the
>> map, but if it is a node it does not. On the basis you can do a more
>> accurate calculation on the area from the polygon & you can't do it on a
>> node that could represent an unknown quantity of buildings I think we need;
>> * When remote mapping an area, unless the task description says
>> otherwise, create a polygon for the round dwelling and tag it building=hut
>> * To ensure our own training & reference sites, such as wiki pages,
>> LearnOSM and slide shows or other materials are up to date - if it's wrong
>> & you can't fix it, at least highlight it so someone can.
>> --
>> Nick
>> Volunteer 'Tallguy' for
>> https://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team
>> http://www.openstreetmap.org/user/Tallguy
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>> http://www.6thswanleyscouts.org.uk/ (treasurer at 6thswanleyscouts.org.uk)
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